Eco features

Becker Mewis Duct

The Becker Mewis Duct and the propeller boss cap fin are power-saving devices providing fuel savings and reduced greenhouse gasses. The Mewis Duct enhances the flow of water to the propeller to increase thrust. The boss cap fin is a small propeller fitted just behind the main propeller. It breaks up the hub vortex generated behind the rotating propeller. The combination of these two “eco” features produces a fuel savings of 6 – 10% and a substantial reduction in CO2 emissions.